The last few days i have the problem with "Lizenzprüfung fehlgeschlagen!"
rsap v2.5.6 stopped working!
I figured out, that the problem could only fixed, when i set the date manually back to 10.07.2017
A newer Version is not possible, because CM7.2 is the only ROM that works without problem on my
Desire-HD. Yes, i used it until today, because it works and we have only one Planet!
My credo is: Use it until it is broken.

Please make sure your phone (more exactly the Play Store app) has Internet access, then force stop and restart the rSAP app. If this also fails, uninstall the app and reinstall it from Play Store. Be sure to immediately start it after installation.